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llvm-capstone/clang/test/CodeGen/catch-undef-behavior.c
Erik Pilkington 600e9deacf Add a 'dynamic' parameter to the objectsize intrinsic 
This is meant to be used with clang's __builtin_dynamic_object_size.
When 'true' is passed to this parameter, the intrinsic has the
potential to be folded into instructions that will be evaluated
at run time. When 'false', the objectsize intrinsic behaviour is
unchanged.

rdar://32212419

Differential revision: https://reviews.llvm.org/D56761

llvm-svn: 352664
2019-01-30 20:34:35 +00:00

417 lines
17 KiB
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// RUN: %clang_cc1 -fsanitize=alignment,null,object-size,shift-base,shift-exponent,return,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -fsanitize-recover=alignment,null,object-size,shift-base,shift-exponent,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -emit-llvm %s -o - -triple x86_64-linux-gnu | opt -instnamer -S | FileCheck %s --check-prefix=CHECK-COMMON --check-prefix=CHECK-UBSAN
// RUN: %clang_cc1 -fsanitize-trap=alignment,null,object-size,shift-base,shift-exponent,return,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -fsanitize-recover=alignment,null,object-size,shift-base,shift-exponent,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -fsanitize=alignment,null,object-size,shift-base,shift-exponent,return,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -fsanitize-recover=alignment,null,object-size,shift-base,shift-exponent,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -emit-llvm %s -o - -triple x86_64-linux-gnu | opt -instnamer -S | FileCheck %s --check-prefix=CHECK-COMMON --check-prefix=CHECK-TRAP
// RUN: %clang_cc1 -fsanitize=signed-integer-overflow -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefix=CHECK-OVERFLOW
// CHECK-UBSAN: @[[INT:.*]] = private unnamed_addr constant { i16, i16, [6 x i8] } { i16 0, i16 11, [6 x i8] c"'int'\00" }
// FIXME: When we only emit each type once, use [[INT]] more below.
// CHECK-UBSAN: @[[LINE_100:.*]] = private unnamed_addr global {{.*}}, i32 100, i32 5 {{.*}} @[[INT]], i8 2, i8 1
// CHECK-UBSAN: @[[LINE_200:.*]] = {{.*}}, i32 200, i32 10 {{.*}}, i8 2, i8 0
// CHECK-UBSAN: @[[LINE_300:.*]] = {{.*}}, i32 300, i32 12 {{.*}} @{{.*}}, {{.*}} @{{.*}}
// CHECK-UBSAN: @[[LINE_400:.*]] = {{.*}}, i32 400, i32 12 {{.*}} @{{.*}}, {{.*}} @{{.*}}
// CHECK-UBSAN: @[[LINE_500:.*]] = {{.*}}, i32 500, i32 10 {{.*}} @{{.*}}, i8 2, i8 0 }
// CHECK-UBSAN: @[[LINE_600:.*]] = {{.*}}, i32 600, i32 3 {{.*}} @{{.*}}, i8 2, i8 1 }
// CHECK-UBSAN: @[[STRUCT_S:.*]] = private unnamed_addr constant { i16, i16, [11 x i8] } { i16 -1, i16 0, [11 x i8] c"'struct S'\00" }
// CHECK-UBSAN: @[[LINE_700:.*]] = {{.*}}, i32 700, i32 14 {{.*}} @[[STRUCT_S]], i8 2, i8 3 }
// CHECK-UBSAN: @[[LINE_800:.*]] = {{.*}}, i32 800, i32 12 {{.*}} @{{.*}} }
// CHECK-UBSAN: @[[LINE_900:.*]] = {{.*}}, i32 900, i32 11 {{.*}} @{{.*}} }
// CHECK-UBSAN: @[[LINE_1000:.*]] = {{.*}}, i32 1000, i32 10 {{.*}} @{{.*}} }
// CHECK-UBSAN: @[[FP16:.*]] = private unnamed_addr constant { i16, i16, [9 x i8] } { i16 1, i16 16, [9 x i8] c"'__fp16'\00" }
// CHECK-UBSAN: @[[LINE_1100:.*]] = {{.*}}, i32 1100, i32 8 {{.*}} @{{.*}} }
// CHECK-UBSAN: @[[LINE_1200:.*]] = {{.*}}, i32 1200, i32 10 {{.*}} @{{.*}} }
// CHECK-UBSAN: @[[LINE_1300:.*]] = {{.*}}, i32 1300, i32 10 {{.*}} @{{.*}} }
// CHECK-UBSAN: @[[LINE_1400:.*]] = {{.*}}, i32 1400, i32 10 {{.*}} @{{.*}} }
// Make sure we check the fp16 type_mismatch data so we can easily match the signed char float_cast_overflow
// CHECK-UBSAN: @[[LINE_1500:.*]] = {{.*}}, i32 1500, i32 10 {{.*}} @[[FP16]], {{.*}} }
// CHECK-UBSAN: @[[SCHAR:.*]] = private unnamed_addr constant { i16, i16, [14 x i8] } { i16 0, i16 7, [14 x i8] c"'signed char'\00" }
// CHECK-UBSAN: @[[LINE_1500:.*]] = {{.*}}, i32 1500, i32 10 {{.*}} @[[FP16]], {{.*}} }
// CHECK-UBSAN: @[[LINE_1600:.*]] = {{.*}}, i32 1600, i32 10 {{.*}} @{{.*}} }
// PR6805
// CHECK-COMMON-LABEL: @foo
void foo() {
union { int i; } u;
// CHECK-COMMON: %[[I8PTR:.*]] = bitcast i32* %[[PTR:.*]] to i8*
// CHECK-COMMON-NEXT: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64.p0i8(i8* %[[I8PTR]], i1 false, i1 false, i1 false)
// CHECK-COMMON-NEXT: %[[OK:.*]] = icmp uge i64 %[[SIZE]], 4
// CHECK-UBSAN: br i1 %[[OK]], {{.*}} !prof ![[WEIGHT_MD:.*]], !nosanitize
// CHECK-TRAP: br i1 %[[OK]], {{.*}}
// CHECK-UBSAN: %[[ARG:.*]] = ptrtoint {{.*}} %[[PTR]] to i64
// CHECK-UBSAN-NEXT: call void @__ubsan_handle_type_mismatch_v1(i8* bitcast ({{.*}} @[[LINE_100]] to i8*), i64 %[[ARG]])
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW:#[0-9]+]]
// CHECK-TRAP-NEXT: unreachable
#line 100
u.i=1;
}
// CHECK-COMMON-LABEL: @bar
int bar(int *a) {
// CHECK-COMMON: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64
// CHECK-COMMON-NEXT: icmp uge i64 %[[SIZE]], 4
// CHECK-COMMON: %[[PTRINT:.*]] = ptrtoint
// CHECK-COMMON-NEXT: %[[MISALIGN:.*]] = and i64 %[[PTRINT]], 3
// CHECK-COMMON-NEXT: icmp eq i64 %[[MISALIGN]], 0
// CHECK-UBSAN: call void @__ubsan_handle_type_mismatch_v1(i8* bitcast ({{.*}} @[[LINE_200]] to i8*), i64 %[[PTRINT]])
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
#line 200
return *a;
}
// CHECK-UBSAN-LABEL: @addr_space
int addr_space(int __attribute__((address_space(256))) *a) {
// CHECK-UBSAN-NOT: __ubsan
return *a;
}
// CHECK-COMMON-LABEL: @lsh_overflow
int lsh_overflow(int a, int b) {
// CHECK-COMMON: %[[RHS_INBOUNDS:.*]] = icmp ule i32 %[[RHS:.*]], 31
// CHECK-COMMON-NEXT: br i1 %[[RHS_INBOUNDS]], label %[[CHECK_BB:.*]], label %[[CONT_BB:.*]],
// CHECK-COMMON: [[CHECK_BB]]:
// CHECK-COMMON-NEXT: %[[SHIFTED_OUT_WIDTH:.*]] = sub nuw nsw i32 31, %[[RHS]]
// CHECK-COMMON-NEXT: %[[SHIFTED_OUT:.*]] = lshr i32 %[[LHS:.*]], %[[SHIFTED_OUT_WIDTH]]
// CHECK-COMMON-NEXT: %[[NO_OVERFLOW:.*]] = icmp eq i32 %[[SHIFTED_OUT]], 0
// CHECK-COMMON-NEXT: br label %[[CONT_BB]]
// CHECK-COMMON: [[CONT_BB]]:
// CHECK-COMMON-NEXT: %[[VALID_BASE:.*]] = phi i1 [ true, {{.*}} ], [ %[[NO_OVERFLOW]], %[[CHECK_BB]] ]
// CHECK-COMMON-NEXT: %[[VALID:.*]] = and i1 %[[RHS_INBOUNDS]], %[[VALID_BASE]]
// CHECK-UBSAN: br i1 %[[VALID]], {{.*}} !prof ![[WEIGHT_MD]]
// CHECK-TRAP: br i1 %[[VALID]]
// CHECK-UBSAN: %[[ARG1:.*]] = zext
// CHECK-UBSAN-NEXT: %[[ARG2:.*]] = zext
// CHECK-UBSAN-NEXT: call void @__ubsan_handle_shift_out_of_bounds(i8* bitcast ({{.*}} @[[LINE_300]] to i8*), i64 %[[ARG1]], i64 %[[ARG2]])
// CHECK-UBSAN-NOT: call void @__ubsan_handle_shift_out_of_bounds
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP: unreachable
// CHECK-TRAP-NOT: call void @llvm.trap()
// CHECK-COMMON: %[[RET:.*]] = shl i32 %[[LHS]], %[[RHS]]
// CHECK-COMMON-NEXT: ret i32 %[[RET]]
#line 300
return a << b;
}
// CHECK-COMMON-LABEL: @rsh_inbounds
int rsh_inbounds(int a, int b) {
// CHECK-COMMON: %[[INBOUNDS:.*]] = icmp ule i32 %[[RHS:.*]], 31
// CHECK-COMMON: br i1 %[[INBOUNDS]]
// CHECK-UBSAN: %[[ARG1:.*]] = zext
// CHECK-UBSAN-NEXT: %[[ARG2:.*]] = zext
// CHECK-UBSAN-NEXT: call void @__ubsan_handle_shift_out_of_bounds(i8* bitcast ({{.*}} @[[LINE_400]] to i8*), i64 %[[ARG1]], i64 %[[ARG2]])
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
// CHECK-COMMON: %[[RET:.*]] = ashr i32 {{.*}}, %[[RHS]]
// CHECK-COMMON-NEXT: ret i32 %[[RET]]
#line 400
return a >> b;
}
// CHECK-COMMON-LABEL: @load
int load(int *p) {
// CHECK-UBSAN: call void @__ubsan_handle_type_mismatch_v1(i8* bitcast ({{.*}} @[[LINE_500]] to i8*), i64 %{{.*}})
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
#line 500
return *p;
}
// CHECK-COMMON-LABEL: @store
void store(int *p, int q) {
// CHECK-UBSAN: call void @__ubsan_handle_type_mismatch_v1(i8* bitcast ({{.*}} @[[LINE_600]] to i8*), i64 %{{.*}})
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
#line 600
*p = q;
}
struct S { int k; };
// CHECK-COMMON-LABEL: @member_access
int *member_access(struct S *p) {
// CHECK-UBSAN: call void @__ubsan_handle_type_mismatch_v1(i8* bitcast ({{.*}} @[[LINE_700]] to i8*), i64 %{{.*}})
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
#line 700
return &p->k;
}
// CHECK-COMMON-LABEL: @signed_overflow
int signed_overflow(int a, int b) {
// CHECK-UBSAN: %[[ARG1:.*]] = zext
// CHECK-UBSAN-NEXT: %[[ARG2:.*]] = zext
// CHECK-UBSAN-NEXT: call void @__ubsan_handle_add_overflow(i8* bitcast ({{.*}} @[[LINE_800]] to i8*), i64 %[[ARG1]], i64 %[[ARG2]])
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
#line 800
return a + b;
}
// CHECK-COMMON-LABEL: @no_return
int no_return() {
// Reaching the end of a noreturn function is fine in C.
// FIXME: If the user explicitly requests -fsanitize=return, we should catch
// that here even though it's not undefined behavior.
// CHECK-COMMON-NOT: call
// CHECK-COMMON-NOT: unreachable
// CHECK-COMMON: ret i32
}
// CHECK-UBSAN-LABEL: @vla_bound
void vla_bound(int n) {
// CHECK-UBSAN: icmp sgt i32 %[[PARAM:.*]], 0
//
// CHECK-UBSAN: %[[ARG:.*]] = zext i32 %[[PARAM]] to i64
// CHECK-UBSAN-NEXT: call void @__ubsan_handle_vla_bound_not_positive(i8* bitcast ({{.*}} @[[LINE_900]] to i8*), i64 %[[ARG]])
#line 900
int arr[n * 3];
}
// CHECK-UBSAN-LABEL: @int_float_no_overflow
float int_float_no_overflow(__int128 n) {
// CHECK-UBSAN-NOT: call void @__ubsan_handle
return n;
}
// CHECK-COMMON-LABEL: @int_float_overflow
float int_float_overflow(unsigned __int128 n) {
// This is 2**104. FLT_MAX is 2**128 - 2**104.
// CHECK-COMMON: %[[INBOUNDS:.*]] = icmp ule i128 %{{.*}}, -20282409603651670423947251286016
// CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
// CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(i8* bitcast ({{.*}} @[[LINE_1000]] to i8*),
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
#line 1000
return n;
}
// CHECK-COMMON-LABEL: @int_fp16_overflow
void int_fp16_overflow(int n, __fp16 *p) {
// CHECK-COMMON: %[[GE:.*]] = icmp sge i32 %{{.*}}, -65504
// CHECK-COMMON: %[[LE:.*]] = icmp sle i32 %{{.*}}, 65504
// CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]]
// CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
// CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(i8* bitcast ({{.*}} @[[LINE_1100]] to i8*),
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
#line 1100
*p = n;
}
// CHECK-COMMON-LABEL: @float_int_overflow
int float_int_overflow(float f) {
// CHECK-COMMON: %[[GE:.*]] = fcmp ogt float %[[F:.*]], 0xC1E0000020000000
// CHECK-COMMON: %[[LE:.*]] = fcmp olt float %[[F]], 0x41E0000000000000
// CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]]
// CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
// CHECK-UBSAN: %[[CAST:.*]] = bitcast float %[[F]] to i32
// CHECK-UBSAN: %[[ARG:.*]] = zext i32 %[[CAST]] to i64
// CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(i8* bitcast ({{.*}} @[[LINE_1200]] to i8*), i64 %[[ARG]]
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
#line 1200
return f;
}
// CHECK-COMMON-LABEL: @long_double_int_overflow
int long_double_int_overflow(long double ld) {
// CHECK-UBSAN: alloca x86_fp80
// CHECK-COMMON: %[[GE:.*]] = fcmp ogt x86_fp80 %[[F:.*]], 0xKC01E800000010000000
// CHECK-COMMON: %[[LE:.*]] = fcmp olt x86_fp80 %[[F]], 0xK401E800000000000000
// CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]]
// CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
// CHECK-UBSAN: store x86_fp80 %[[F]], x86_fp80* %[[ALLOCA:.*]], align 16, !nosanitize
// CHECK-UBSAN: %[[ARG:.*]] = ptrtoint x86_fp80* %[[ALLOCA]] to i64
// CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(i8* bitcast ({{.*}} @[[LINE_1300]] to i8*), i64 %[[ARG]]
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
#line 1300
return ld;
}
// CHECK-COMMON-LABEL: @float_uint_overflow
unsigned float_uint_overflow(float f) {
// CHECK-COMMON: %[[GE:.*]] = fcmp ogt float %[[F:.*]], -1.{{0*}}e+00
// CHECK-COMMON: %[[LE:.*]] = fcmp olt float %[[F]], 0x41F0000000000000
// CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]]
// CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
// CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(i8* bitcast ({{.*}} @[[LINE_1400]] to i8*),
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
#line 1400
return f;
}
// CHECK-COMMON-LABEL: @fp16_char_overflow
signed char fp16_char_overflow(__fp16 *p) {
// CHECK-COMMON: %[[GE:.*]] = fcmp ogt float %[[F:.*]], -1.29{{0*}}e+02
// CHECK-COMMON: %[[LE:.*]] = fcmp olt float %[[F]], 1.28{{0*}}e+02
// CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]]
// CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
// CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(i8* bitcast ({{.*}} @[[LINE_1500]] to i8*),
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
#line 1500
return *p;
}
// CHECK-COMMON-LABEL: @float_float_overflow
float float_float_overflow(double f) {
// CHECK-COMMON: %[[F:.*]] = call double @llvm.fabs.f64(
// CHECK-COMMON: %[[GE:.*]] = fcmp ogt double %[[F]], 0x47EFFFFFE0000000
// CHECK-COMMON: %[[LE:.*]] = fcmp olt double %[[F]], 0x7FF0000000000000
// CHECK-COMMON: %[[OUTOFBOUNDS:.*]] = and i1 %[[GE]], %[[LE]]
// CHECK-COMMON: %[[INBOUNDS:.*]] = xor i1 %[[OUTOFBOUNDS]], true
// CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
// CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(i8* bitcast ({{.*}} @[[LINE_1600]] to i8*),
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
#line 1600
return f;
}
// CHECK-COMMON-LABEL: @int_divide_overflow
// CHECK-OVERFLOW-LABEL: @int_divide_overflow
int int_divide_overflow(int a, int b) {
// CHECK-COMMON: %[[ZERO:.*]] = icmp ne i32 %[[B:.*]], 0
// CHECK-OVERFLOW-NOT: icmp ne i32 %{{.*}}, 0
// CHECK-COMMON: %[[AOK:.*]] = icmp ne i32 %[[A:.*]], -2147483648
// CHECK-COMMON-NEXT: %[[BOK:.*]] = icmp ne i32 %[[B]], -1
// CHECK-COMMON-NEXT: %[[OVER:.*]] = or i1 %[[AOK]], %[[BOK]]
// CHECK-COMMON: %[[OK:.*]] = and i1 %[[ZERO]], %[[OVER]]
// CHECK-COMMON: br i1 %[[OK]]
// CHECK-OVERFLOW: %[[AOK:.*]] = icmp ne i32 %[[A:.*]], -2147483648
// CHECK-OVERFLOW-NEXT: %[[BOK:.*]] = icmp ne i32 %[[B:.*]], -1
// CHECK-OVERFLOW-NEXT: %[[OK:.*]] = or i1 %[[AOK]], %[[BOK]]
// CHECK-OVERFLOW: br i1 %[[OK]]
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP: unreachable
return a / b;
// CHECK-COMMON: }
// CHECK-OVERFLOW: }
}
// CHECK-COMMON-LABEL: @sour_bool
_Bool sour_bool(_Bool *p) {
// CHECK-COMMON: %[[OK:.*]] = icmp ule i8 {{.*}}, 1
// CHECK-COMMON: br i1 %[[OK]]
// CHECK-UBSAN: call void @__ubsan_handle_load_invalid_value(i8* bitcast ({{.*}}), i64 {{.*}})
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP: unreachable
return *p;
}
// CHECK-COMMON-LABEL: @ret_nonnull
__attribute__((returns_nonnull))
int *ret_nonnull(int *a) {
// CHECK-COMMON: [[OK:%.*]] = icmp ne i32* {{.*}}, null
// CHECK-COMMON: br i1 [[OK]]
// CHECK-UBSAN: call void @__ubsan_handle_nonnull_return
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP: unreachable
return a;
}
// CHECK-COMMON-LABEL: @call_decl_nonnull
__attribute__((nonnull)) void decl_nonnull(int *a);
void call_decl_nonnull(int *a) {
// CHECK-COMMON: [[OK:%.*]] = icmp ne i32* {{.*}}, null
// CHECK-COMMON: br i1 [[OK]]
// CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP: unreachable
decl_nonnull(a);
}
extern void *memcpy (void *, const void *, unsigned) __attribute__((nonnull(1, 2)));
// CHECK-COMMON-LABEL: @call_memcpy_nonnull
void call_memcpy_nonnull(void *p, void *q, int sz) {
// CHECK-COMMON: icmp ne i8* {{.*}}, null
// CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg
// CHECK-TRAP: call void @llvm.trap()
// CHECK-COMMON: icmp ne i8* {{.*}}, null
// CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg
// CHECK-TRAP: call void @llvm.trap()
memcpy(p, q, sz);
}
extern void *memmove (void *, const void *, unsigned) __attribute__((nonnull(1, 2)));
// CHECK-COMMON-LABEL: @call_memmove_nonnull
void call_memmove_nonnull(void *p, void *q, int sz) {
// CHECK-COMMON: icmp ne i8* {{.*}}, null
// CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg
// CHECK-TRAP: call void @llvm.trap()
// CHECK-COMMON: icmp ne i8* {{.*}}, null
// CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg
// CHECK-TRAP: call void @llvm.trap()
memmove(p, q, sz);
}
// CHECK-COMMON-LABEL: @call_nonnull_variadic
__attribute__((nonnull)) void nonnull_variadic(int a, ...);
void call_nonnull_variadic(int a, int *b) {
// CHECK-COMMON: [[OK:%.*]] = icmp ne i32* {{.*}}, null
// CHECK-COMMON: br i1 [[OK]]
// CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg
// CHECK-UBSAN-NOT: __ubsan_handle_nonnull_arg
// CHECK-COMMON: call void (i32, ...) @nonnull_variadic
nonnull_variadic(a, b);
}
// CHECK-UBSAN: ![[WEIGHT_MD]] = !{!"branch_weights", i32 1048575, i32 1}
// CHECK-TRAP: attributes [[NR_NUW]] = { noreturn nounwind }
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